The estimated cost of making the UK's current stock of waste safe is currently £136bn, for a value of "safe" that leaves at least one of the high level waste pools being at an "intolerable" level of risk of leaking into groundwater until the late 2050s.
For comparison, the estimated cost of achieving net zero in the UK by 2050 is £110bn.
And yet people worry about it and the OP claims it led to the situation in Germany.
Maybe addressing the issue needs to occur, rather than dismissing it?